Five Reasons:
(1) The economy will slowly improve until election day.
(2) A small majority of eligible USA voters support the European Socialist political model - and their voter participation rate has slowly increased for 4 straight presidential elections.
(3) Conservatives have had NO national political leadership since Newt Gingrich self-destructed in 1998.
(4) America accepts 1 million new citizens each year, and 75% of them vote for the Democratic Party.
(5) The Hard Left MSM has relentlessly, viciously, and brilliantly assaulted the Republican Party for 40 years - yet, the GOP still has NO organized national strategy to counter this assault.
But as I see it, it comes down to:
1) The media are solidly behind Obama and aren't going to report anything that hurts his candidacy.
2) Republicans don't have a good candidate -- or even just a widely agreed-on candidate.
They're not saying Obama will win big, though. They're saying it's very likely he will win. Those aren't always the same thing.